Using Scan Router (Lite or Pro), it does not get any easier than pressing the Scanner Function Key, then selecting your destination and start.
Three key strokes to send a document! Don't think any other MFP can do it more simply.
With eCopy there may be a log-on, then you have to scan your document, because they make you preview it, then you open up a mail client to select your recipients ... too many key strokes.